1 files changed, 4 insertions, 6 deletions
diff --git a/Libraries/LibJS/Tests/builtins/Date/Date.prototype.toISOString.js b/Libraries/LibJS/Tests/builtins/Date/Date.prototype.toISOString.js
index f929540f99..2b380fc24d 100644
--- a/Libraries/LibJS/Tests/builtins/Date/Date.prototype.toISOString.js
+++ b/Libraries/LibJS/Tests/builtins/Date/Date.prototype.toISOString.js
@@ -1,9 +1,7 @@
 test("basic functionality", () => {
     expect(new Date(1597955034555).toISOString()).toBe("2020-08-20T20:23:54.555Z");
-
-    // FIXME: Add these once they work.
-    //expect(new Date(Date.UTC(22020)).toISOString()).toBe("+022020-01-01T00:00:00.000Z");
-    //expect(new Date(Date.UTC(1950)).toISOString()).toBe("1950-01-01T00:00:00.000Z");
-    //expect(new Date(Date.UTC(1800)).toISOString()).toBe("1800-01-01T00:00:00.000Z");
-    //expect(new Date(Date.UTC(-100)).toISOString()).toBe("-000100-01-01T00:00:00.000Z");
+    expect(new Date(Date.UTC(22020)).toISOString()).toBe("+022020-01-01T00:00:00.000Z");
+    expect(new Date(Date.UTC(1950)).toISOString()).toBe("1950-01-01T00:00:00.000Z");
+    expect(new Date(Date.UTC(1800)).toISOString()).toBe("1800-01-01T00:00:00.000Z");
+    expect(new Date(Date.UTC(-100)).toISOString()).toBe("-000100-01-01T00:00:00.000Z");
 });